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Gepubliceerd in:

01-12-2013

Knowing your partner is not enough: spousal importance moderates the link between attitude familiarity and ambulatory blood pressure

Auteurs: Bert N. Uchino, David M. Sanbonmatsu, Wendy Birmingham

Gepubliceerd in: Journal of Behavioral Medicine | Uitgave 6/2013

Abstract

Close relationships have been linked to cardiovascular morbidity and mortality. More research is needed, however, on the social and biological processes responsible for such links. In this study, we examined the role of relationship-based attitudinal processes (i.e., attitude familiarity and partner importance) on ambulatory blood pressure during daily life. Forty-seven married couples completed a questionnaire regarding their own attitudes, perceptions of their partner’s attitudes, and perceptions of partner importance. They also underwent a 1-day ambulatory assessments of daily spousal interactions and blood pressure. Partner importance was related to better interpersonal functioning (e.g., partner responsiveness) and lower ambulatory systolic blood pressure. More interestingly, partner importance moderated the links between attitude familiarity and both ambulatory systolic and diastolic blood pressure. This statistical interaction revealed that simply knowing a partner’s attitudes was not enough as partner knowledge was primarily related to lower ambulatory blood pressure when they were also viewed as more important. These data are discussed in light of how attitude familiarity and spousal importance may jointly influence health outcomes and the social-cognitive mechanisms potentially responsible for such links.

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In the present study, we are referring specifically to how important individuals view their spouse and not how important they view their spouses' specific attitudes. We believe that such views of spousal importance are more likely to guide use of partner knowledge across a range of attitude objects and hence influence the types of long-term disease processes we are studying (i.e., cardiovascular disease).

We focused on ambulatory SBP and DBP given their established prospective links to cardiovascular disease risk (Pickering et al., 2006). However, we also examined related measures of mean arterial pressure (MAP), pulse pressure (PP, SBP–DBP) and the rate-pressure product (RPP, SBP*HR/100). The results were similar as reported for ABP when examining MAP or PP for the spousal importance main effects and the spousal importance × attitude familiarity interactions (p's < .05). RPP is typically examined in the context of clinical populations (e.g., hypertensives) as a measure of myocardial demand. One might thus expect that the links in the current study might be weaker as we used a relatively healthy sample. Consistent with this possibility, the main effect of spousal importance on RPP was not significant and the spousal importance × attitude familiarity interaction was marginally significant (p = .07).

A related measure of interest is also that of attitude similarity (Byrne et al., 1986). We indexed this construct by computing the correlation between spouses actual attitudes. As might be expected in established relationships, attitude similarity and familiarity were highly correlated (r = .81) which is likely a reflection of both selection and ongoing relationship interactions (Luo & Klohnen, 2005). However, statistically controlling for attitude similarity did not alter the spousal importance main effect or attitude familiarity × spousal importance interactions (p's < .05).

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Titel: Knowing your partner is not enough: spousal importance moderates the link between attitude familiarity and ambulatory blood pressure
Auteurs: Bert N. Uchino
David M. Sanbonmatsu
Wendy Birmingham
Publicatiedatum: 01-12-2013
Uitgeverij: Springer US
Gepubliceerd in: Journal of Behavioral Medicine / Uitgave 6/2013
Print ISSN: 0160-7715
Elektronisch ISSN: 1573-3521
DOI: https://doi.org/10.1007/s10865-012-9437-x

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